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Tomorrow the ten metre wide Asteroid 2011 MD will pass within 12,000 km of Earth. How close is that? Well, it’s close enough that it will travel through the network of GPS satellites that circle the Earth. Pasquale Tricarico, a Research Scientist at the Planetary Science Institute in Tucson, Arizona, has created a series of animations describing the event’s geometry.

I have embedded my favourite visualisation from the series below. It depicts the encounter from the point of view of the asteroid. Amazing.

Thanks to Michele Bannister for sharing the link.